Coupling-block for sprocket-chains



I (No Model.)

0. J. MERRITT. COUPLING BLOCK FOR SPROGKET CHAINS.

No. 562,550. Patented June 23, 1896.

wi imwm m M 2pm ha/15mm UNITED STATES PATENT OFFICE.

OTIS J. MERRITT, OF SENEAGUOTEEN, IDAHO, ASSIGNOR OF ONE-HALF TO JOHN J.COSTELLO, OF OOEUR DALENE, IDAHO.

COUPLING-BLOCK FOR SPROCKET-CHAINS.

SPECIFICATION forming part of Letters Patent No. 562,550, dated June 23,1896. Application filed February 19, 1896. Serial No. 579,893. (Nomodel.)

T 0 all whom it may concern.-

Be it known that I, OTIS J. MERRITT, a citizen of the United States,residing at Seneaguoteen, in the county of Kootenai and State of Idaho,have invented certain new and useful Improvements in Ooupling- Blocksfor Sprocket-Chains; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to certain new and useful improvements incoupling-blocks for sprocket-chains, and it has for its objects, amongothers, to provide a simple and cheap block link-coupling readilyapplied and which when once applied cannot become separated ordisconnected. I make the link in two parts, so that it may be readilyseparated when it is desired to remove the chain.

Other objects and advantages of the invention will hereinafter appear,and the novel features thereof will be particularly pointed out in theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification, and in which- Figure 1 is a perspective view of my blocklink-couplin g with the parts separated. Fig. 2 is a similar viewshowing the parts connected. Fig. 3 is a vertical longitudinalsectionthrough Fig. 2.

Like letters of reference indicate like parts in the several views.

Referring now to the details of the drawings by letter, A designates oneportion of the coupling-link, which has a transverse opening Ct for thereception of the rivet to connect it with the adj acent-link of thechain, and upon its other face, which is formed on a bevel'or taper, asshown, there is formed, extending from the upper face downward, asubstantially T-shaped slot b, which, however, does not extend throughthe opposite face, but leaves a portion 19 upon which the T-shaped tenonof the other part is adapted to rest, so as not to give way where itcomes in contact with the sprocket.

O is the other part of the coupling having a transverse passage 0 forthe reception of parts are mounted and the screw turned up sufficientlytight a portion of its head will overlap the T-shaped projection ortenon and prevent vertical displacement thereof. The

two parts A and B are rounded or concaved upon their under sides, asseen at f, where they come next to the wheel.

In practice, the chain is placed over the sprocket-wheel with theconcavecl side next to the wheel, the screw being turned so that itsfiat side will come next to the slot, then the two ends of the chain arebrought together and then the tenon or projection D may be slipped intothe T-shaped slot of the part A and pushed down until it bears upon thewall at the bottom of the slot, then the screw is tightened so as tobring the round side of its head over the projection or tenon D, whichprevents the parts from separating or sliding out when the chain isslack. The bevel or taper of the adjacent faces prevents separation whenthere is a tension on the chain.

Modifications in details may be resorted to without departing from thespirit of the invention or sacrificing any of its advantages.

Having thus described the invention, what is claimed as new is- 1. Ablock link-coupling for sprocket-chains comprising a half-link having aT- shaped vertically-disposed slot and a corresponding half-link havinga T-shaped projection fitted to said slot, substantially as described.

2. A block link-couplin g for sprocket-chain s comprising a half-linkhaving a T-shaped verticallydisposed slot and a corresponding halflinkhaving a T-shaped projection fitted to a head'adapted to engage oversaid projection, the adjacent faces being beveled, the said slot havinga bottom Wall upon which the projection rests, substantially asdescribed.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

OTIS J. MERRITT.

\Vitnesses:

T. F. OREILLY, JAMES H. HARTE.

